Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ...
We know little about the Laurentide Ice Sheet’s erosive behavior prior to the Last Glacial Maximum because, as the ice sheet advanced, it largely eroded evidence of previous glaciations. To understand the erosivity of the eastern portion of the Laurentide Ice Sheet, the Quebec-Labrador Ice Dome, we...
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NSF Arctic Data Center
2024
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Online Access: | https://dx.doi.org/10.18739/a2x34mt66 https://arcticdata.io/catalog/view/doi:10.18739/A2X34MT66 |
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ftdatacite:10.18739/a2x34mt66 2024-09-15T18:12:17+00:00 Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ... Cavnar, Peyton Bierman, Paul Shakun, Jeremy Corbett, Lee Caffe, Marc Galford, Gillian LeBlanc, Danielle 2024 text/xml https://dx.doi.org/10.18739/a2x34mt66 https://arcticdata.io/catalog/view/doi:10.18739/A2X34MT66 en eng NSF Arctic Data Center Cosmogenic nuclides, cosmo, paleoclimate, paleoclimatology, Canada, Quebec, Labrador, Laurentide, LIS dataset Dataset 2024 ftdatacite https://doi.org/10.18739/a2x34mt66 2024-08-01T10:39:04Z We know little about the Laurentide Ice Sheet’s erosive behavior prior to the Last Glacial Maximum because, as the ice sheet advanced, it largely eroded evidence of previous glaciations. To understand the erosivity of the eastern portion of the Laurentide Ice Sheet, the Quebec-Labrador Ice Dome, we sampled sand from deglacial features (eskers and deltas) across eastern Canada—a landscape repeatedly overrun by ice. We measured concentrations of 10Be and 26Al in quartz isolated from the sediment and, after correcting for cosmic-ray exposure during the Holocene, used these results to determine nuclide concentrations at the time of deglaciation. To infer sediment sourcing using Beryllium-10 (10Be) and Aluminum-26 (26Al), we collected and analyzed modern river sediment drained from Holocene-exposed landscapes. The mean 10Be concentration in deglacial sediments (n=11) is (1.87 ±1.39) E4 atoms per gram (g-1) and (3.31 ±1.57) E4 atoms g-1 in modern river sediments (n=10). Corrected for Holocene exposure, we ... Dataset Ice Sheet DataCite |
institution |
Open Polar |
collection |
DataCite |
op_collection_id |
ftdatacite |
language |
English |
topic |
Cosmogenic nuclides, cosmo, paleoclimate, paleoclimatology, Canada, Quebec, Labrador, Laurentide, LIS |
spellingShingle |
Cosmogenic nuclides, cosmo, paleoclimate, paleoclimatology, Canada, Quebec, Labrador, Laurentide, LIS Cavnar, Peyton Bierman, Paul Shakun, Jeremy Corbett, Lee Caffe, Marc Galford, Gillian LeBlanc, Danielle Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ... |
topic_facet |
Cosmogenic nuclides, cosmo, paleoclimate, paleoclimatology, Canada, Quebec, Labrador, Laurentide, LIS |
description |
We know little about the Laurentide Ice Sheet’s erosive behavior prior to the Last Glacial Maximum because, as the ice sheet advanced, it largely eroded evidence of previous glaciations. To understand the erosivity of the eastern portion of the Laurentide Ice Sheet, the Quebec-Labrador Ice Dome, we sampled sand from deglacial features (eskers and deltas) across eastern Canada—a landscape repeatedly overrun by ice. We measured concentrations of 10Be and 26Al in quartz isolated from the sediment and, after correcting for cosmic-ray exposure during the Holocene, used these results to determine nuclide concentrations at the time of deglaciation. To infer sediment sourcing using Beryllium-10 (10Be) and Aluminum-26 (26Al), we collected and analyzed modern river sediment drained from Holocene-exposed landscapes. The mean 10Be concentration in deglacial sediments (n=11) is (1.87 ±1.39) E4 atoms per gram (g-1) and (3.31 ±1.57) E4 atoms g-1 in modern river sediments (n=10). Corrected for Holocene exposure, we ... |
format |
Dataset |
author |
Cavnar, Peyton Bierman, Paul Shakun, Jeremy Corbett, Lee Caffe, Marc Galford, Gillian LeBlanc, Danielle |
author_facet |
Cavnar, Peyton Bierman, Paul Shakun, Jeremy Corbett, Lee Caffe, Marc Galford, Gillian LeBlanc, Danielle |
author_sort |
Cavnar, Peyton |
title |
Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ... |
title_short |
Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ... |
title_full |
Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ... |
title_fullStr |
Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ... |
title_full_unstemmed |
Measuring in situ Cosmogenic Beryllium-10 and Aluminum-26 in Deglacial Sediment Reveals Limited Erosion Under the Quebec-Labrador Ice Dome, Canada, 2022 - 2024 ... |
title_sort |
measuring in situ cosmogenic beryllium-10 and aluminum-26 in deglacial sediment reveals limited erosion under the quebec-labrador ice dome, canada, 2022 - 2024 ... |
publisher |
NSF Arctic Data Center |
publishDate |
2024 |
url |
https://dx.doi.org/10.18739/a2x34mt66 https://arcticdata.io/catalog/view/doi:10.18739/A2X34MT66 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_doi |
https://doi.org/10.18739/a2x34mt66 |
_version_ |
1810449873523179520 |